Lanxess Deutschland Gmbh

Basf Aktiengesellschaft

Bayer Aktiengesellschaft

Siemens Aktiengesellschaft

Wacker-chemie Gmbh

Hoechst Aktiengesellschaft

Arlanxeo Deutschland Gmbh

The Pennsylvania Research Corporation

Merck Patent Gmbh

Agfa Gevaert Nv

Boehringer Mannheim Gmbh

Mannesmann Aktiengesellschaft

Basf Lacke+farben Ag

Heraeus Kulzer Gmbh

Technische Universitat Munchen

Oskar Nuyken

Werner Obrecht

Julia Maria Müller

Reinhold Schwalm

Wolfgang Reich

Christopher Ong

Lukas Haussling

Martin Schneider

Julia Maria Jeschko

Roman-Benedikt Raether

Bernward Deubzer

Erich Beck

Jochen Dauth

Klaus Budde

Brigitte Voit

Karl-Heinz Etzbach

Harry R Allcock

Rudiger Musch

Ferdinand Quella

Peter Strohriegl

Ian Manners

Gerhard Renner

Mario Vierle

Harry Mueller

Ludek Meca

Gerhard Maier

Lubica Triscikova

Ralf Kollefrath

Heinz Berke

Cliff Scherer

Jurgen Stebani

Joan T Vermeersch

Marc Irene Van Damme

Christian Herzig

Thomas Scholl

Hubert Spreitzer

Michael-Joachim Brekner

Johan J Lamotte

Karin H Beck

Thomas Loerzer

Stefan Beckmann

Gerhard Langstein

Freddy Helmer-Metzmann

Peter Sluka

Yvonne Heischkel

Roland Schaefer

Martin Bohnenpoll

Heike Windisch

Heike Kilburg

Stephen D Pask

Dieter Schodel

David Christoph Müller

Johann Weis

Renke Mottweiler

Judit E Puskas

Wolfgang Pekruhn

Klaus Meerholz

Philipp Wieland

Cristina Stere

Detlef Heindl

Karin Weiss

Michael Bayerl

Hartmut Grethen

Peter Finckh

Michael Walter

Jürgen Ismeier

Thomas Braig

Julia Marie Mueller

Markus Gross

Walter Melchior

Barbara Dorner

Jeffrey A Dodge

Dirk Kurt Schön

Fritz Kühn

Dazhong Yang

Reinhold Hecht

Klaus Burger

Brigitte Helmreich

Marcus Sch&auml;fer

Elfriede Mayer

Kirsten Langfeld

Nicolas St&ouml;ckel

Alexander Wokaun

Armin Lang

Lars Friebe

Andrej Stasko

Andreas Baindl

Christoph Erdmann

Carsten Kreuder

Ralf Bohner

Juergen Ismeier

Brigette Voit

Axel Vischer

Kirstin Langfeld

Hans-Peter Muhlbauer

Thomas Dittmer

Kamelia Karlou-Eyrisch

Monika Kellner

Florian Bielefeldt

Provided are new functionalized nitrile rubbers, which may optionally also be in partially or wholly hydrogenated form, and also a process for preparing them by metathesis of nitrile rubbers in the presence of a metathesis catalyst and at least one functionalized allyl compound. The new functionalized nitrile rubbers are suitable for producing vulcanizable mixtures and allow the production of vulcanizates having very stable networks. Also made possible, in particular, is the synthesis of block copolymers.

Functionalized nitrile rubbers and the production thereof

A process of degrading nitrile rubbers comprises subjecting them to a metathesis reaction in the presence of specific catalysts with increased activity.

Process for degrading nitrile rubbers in the presence of catalysts having an increased activity

Provided are new partially hydrogenated nitrile rubbers which are distinguished by a specific ratio of viscosity to molecular weight, and also vulcanizable mixtures and vulcanizates based on said rubbers, and also the associated preparation processes. The partially hydrogenated nitrile rubbers lead to compounded formulations having advantageous processing properties in conjunction with excellent vulcanizate properties.

Partially hydrogenated nitrile rubbers

New catalyst systems for metathesis reactions, in particular for the metathesis of nitrile rubber, are provided.

Process for reacting chemical compounds in the presence of catalyst systems

A novel process for reducing the molecular weight of nitrile rubber in the presence of specific catalyst systems containing the metathesis catalyst and also a specific addition of fluorine-containing boron compounds is provided.

Catalyst systems and their use for metathesis reactions

Catalysts for metathesis reactions, in particular for the metathesis of nitrile rubber, are provided.

Catalysts for metathesis reactions

A novel process for the metathetic degradation of nitrile rubbers is provided which uses specific transition metal complex catalysts showing an increased activity.

Metathesis of nitrile rubbers in the presence of transition metal complex catalysts

The metathetic degradation of nitrile rubber can be improved by use of a combination of metal-carbene complex catalysts with specific transition metal additives.

Process for the metathetic degradation of nitrile rubber

Novel catalyst systems for metathesis reactions, in particular for the metathesis of nitrile rubber, which contain a specific salt additive in addition to the metathesis catalyst are provided.

An improved process for the metathetic degradation of nitrile rubber using catalyst systems comprising the catalyst and also a phosphane or diphosphane is provided.

Process for the metathetic degradation of nitrile rubbers

The invention provides low molecular weight or polymeric organic materials in which at least one hydrogen atom is replaced by a group of the formula (A) where R is alkyl group, alkoxyalkyl group, alkoxy group, thioalkoxy group, aryl group or alkenyl group, in each of which one or more hydrogen atoms may be replaced and one or more nonadjacent carbon atoms may be replaced.

Materials that can be structured, method for producing the same and their use

A novel process for the degradation of nitrile rubber by metathesis using ruthenium- or osmium-based catalysts which have both a substituted or unsubstituted imidazolidine ligand and a carbene ligand bearing a phosphonium radical is provided.

Method for the degradation of nitrile rubber by metathesis in the presence of ruthenium- or osmium-based catalysts

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Munich, Germany

Oskar Nuyken